Sony Corporation

Tsuyoshi Masato

Shinichi Uesaka

Kazuo Nakamura

Shiho Moriai

Atsushi Ozawa

Masanobu Katagi

Shin Hotta

Tomoyuki Ono

Kazuhito Tsuchida

Kaoru Yanamoto

Kentaro Marutani

A battery charging device includes a battery pack including a plurality of battery cells connected in series, and a control unit. The control unit is configured to change a series connection of the battery cells in response to a variation in output voltage of a solar battery.

Secondary battery charging device, method of charging in secondary battery charging device, photovoltaic generator, method of power generation in photovoltaic generator, photovoltaic-charged secondary battery system, electronic device, and electrical vehicle

There is provided a power storage system including at least two battery units mutually connected in parallel, the battery units each including at least one cell and at least one monitor device configured to monitor a charge state, at least one battery charger configured to supply charge current to each of the battery units, and at least one power storage control device configured to control a charge current value that is supplied to each of the battery units. The power storage control device is configured to decrease the charge current value in accordance with the charge state of each of the battery units.

Power storage system, power storage control device, and power storage control method

A power supply device including: (a) a power supply unit group composed of a plurality of power supply units and connected with a power consuming appliance; and (b) a control device configured to control the power supply unit group, wherein the control device and each of the power supply units are connected to each other by a communicating circuit.

Power supply device

A content data managing apparatus includes: timing means for measuring time, not allowed to correct measure time by an operator; content-data storing means for storing data of content and recording time of the content measured by the timing means; content recording means for recording the content to cause the content-data storing means to store data of the recorded content; recording-time recording means for causing the content-data storing means to store, in association with the content, the recording time when the recording of the content is executed; storage-period extracting means for extracting data concerning a storage period for the content, from the data of the content; storage-period-end-time calculating means for calculating storage period end time for the content from the storage period and data of the recording time; and content-data deleting means for deleting the content when present time measured by the timing means is past the storage period end time.

Content data managing apparatus, content data managing method, and content data managing program

A sending-receiving system, a sender apparatus, a sending method, a receiver apparatus, a receiving method, a recording medium, and a program for improving the reliability of communication. A TS packet sequence furnished with an RTP header includes audio data. The audio data alone constitutes a TS packet sequence having the RTP header as well. That is, an RTP packet having the same sequence number of, for example, '1235h' is transmitted twice in a row. If the receiving side can receive at least one of the two RTP packets thus transmitted, that means the audio data has been sent intact. This arrangement makes it possible to prevent disconnections of audio being offered to the user. The invention applies to both the transmitting and the receiver apparatus for sending and receiving data therebetween.

Sending-receiving system, sender apparatus, sending method, receiver apparatus, receiving method, recording medium, and program for improving communication reliability

An arbitrary input AC voltage is applied from an external power supply (1) to a rectifying circuit (2), and one rectifying output end of the rectifying circuit is connected to a switching element (4) through a coil (3), while the other rectifying output end of the rectifying circuit is connected to a common terminal of the switching element through a detecting circuit (5) for a current waveform. Further, a peak value wave detecting circuit formed of a diode (6) and a capacitor (7) is connected in parallel with the switching element (4) so that a step-up chopper circuit is formed. A detecting circuit (10) for an output voltage having two resistors (9a), (9b) is connected between both ends of this capacitor (7). The one rectifying output end of the rectifying circuit (2) is connected to a detecting circuit (11) for an effective voltage value, and the two resistors (9a), (9b) for detecting the output voltage of the detecting circuit (10) are selected by a detecting signal of the detecting circuit (11). The detecting signals of these detecting circuits (5), (10), (11) are supplied to a control block (12) for controlling turning-on and turning-off timings of the switching element (4).

Growing community of inventors

Kanagawa, Japan

Tsuyoshi Masato